JP6460335B2 - Control device for hybrid vehicle - Google Patents

Description

  The present invention relates to a control apparatus for a hybrid vehicle including an engine (internal combustion engine) and a travel motor driven by electric power supplied from a drive battery.

  An electric vehicle such as an electric vehicle or a hybrid vehicle includes a travel motor and a high-voltage drive battery that supplies electric power to the travel motor. In recent years, an external power feeding device for converting the DC power of the driving battery into AC power and supplying the power to an electric device outside the vehicle has been put into practical use. However, when the remaining amount of charge of the driving battery is small, there is a risk of power shortage during use of the electric device.

  Even in such a case, in the hybrid vehicle, the driving battery can be charged by operating the engine and generating power by the generator, so that a shortage of power can be avoided. Specifically, there is a hybrid vehicle that supplies power to the outside of the vehicle while generating power by driving an engine (see Patent Document 1).

  Thereby, it can prevent falling into power shortage during use of an electric equipment.

JP2013-51772A

  However, if electric power is supplied to an electric device outside the vehicle while driving the engine, the amount of electric power supplied to the electric device may vary.

  Further, when the external power supply device includes a power supply battery, when the power supply battery is charged by the power supplied from the drive battery and the engine is started to charge the drive battery, May be overcharged, leading to deterioration of the power supply battery.

  The present invention has been made in view of such circumstances, and provides a control device for a hybrid vehicle that can appropriately supply power without falling short of power during use of an electric device outside the vehicle. With the goal.

  A first aspect of the present invention that solves the above problems is a travel motor driven by power supplied from an engine and a drive battery that drives a generator, and the electric power of the drive battery to an electric device outside the vehicle. A control device for controlling a hybrid vehicle, comprising: a connection portion to which an external power supply device for supply is connected; and an opening / closing portion that opens and closes a connection circuit that connects the drive battery and the connection portion, An operation state detection unit that detects an operation state of the engine, and a power supply control unit that controls power supply to the electric device according to a detection result of the operation state detection unit, the power supply control unit During the period in which the operation of the engine is detected by the state detection unit, the power supply from the driving battery to the electric device is stopped by opening the opening / closing unit. The control apparatus for a hybrid vehicle.

  According to a second aspect of the present invention, in the hybrid vehicle control device of the first aspect, the engine is based on a charge amount detection unit that detects a charge amount of the drive battery, and a detection result of the charge amount detection unit. A charge control unit that controls the amount of charge of the drive battery by operating the generator to generate power, and the charge control unit is for the drive detected by the charge amount detection unit In the hybrid vehicle control apparatus, the engine is started to start charging the drive battery when a charge amount of the battery becomes equal to or less than a first threshold value.

  According to a third aspect of the present invention, in the hybrid vehicle control device according to the second aspect, the charge control unit is configured such that the charge amount of the driving battery detected by the charge amount detection unit is greater than the first threshold value. If it increases to a value greater than the second threshold value, the engine is stopped and charging of the drive battery is stopped.

  According to a fourth aspect of the present invention, in the hybrid vehicle control device according to any one of the first to third aspects, the external power supply device includes a power supply battery for supplying power to the electric device, The power supply control unit is a control device for a hybrid vehicle that supplies power from the power supply battery to the electric device during a period in which the opening / closing unit is in an open state.

  According to a fifth aspect of the present invention, in the hybrid vehicle control device according to any one of the first to fourth aspects, the hybrid vehicle includes a display control unit that controls a display device included in the hybrid vehicle, and the display control unit includes: A control device for a hybrid vehicle, wherein the open / close state of the open / close section is displayed on the display device.

  According to the hybrid vehicle control device of the present invention, it is possible to appropriately supply electric power to the electric device without causing power shortage during use of the electric device outside the vehicle.

It is a schematic diagram showing an example of a hybrid vehicle concerning one embodiment of the present invention. It is a block diagram which shows schematic structure of the control apparatus which concerns on one Embodiment of this invention. It is a flowchart which shows an example of the electric power feeding control by the control apparatus which concerns on one Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, a hybrid vehicle (hereinafter also simply referred to as “vehicle”) 10 according to the present embodiment includes a traveling motor 11 and an engine 12 as a driving source for traveling. The traveling motor 11 is connected to the front wheel 14 via the drive transmission mechanism 13. The traveling motor 11 is connected to a high-voltage driving battery 16 via an inverter (motor inverter) 15.

  The engine 12 is connected to a generator (generator) 18 via an output system 17. The generator 18 is connected to a driving battery 16 via an inverter (generator inverter) 15. The output system 17 is connected to the generator 18 and is also connected to the drive transmission mechanism 13 via the clutch 19.

  When the engine 12 is driven in accordance with the driving state of the vehicle 10, the driving force of the engine 12 is first transmitted to the generator 18 via the output system 17. The generator 18 is operated by the driving force of the engine 12, and the electric power generated by the generator 18 is appropriately supplied to the driving battery 16 to charge the driving battery 16. Further, when the clutch 19 is connected according to the driving state of the vehicle 10, the driving force of the engine 12 is transmitted to the front wheels 14 via the drive transmission mechanism 13.

  Further, the vehicle 10 is provided with an inlet 20 to which a charging connector connected to a charging facility outside the vehicle is connected. Although illustration is omitted, the inlet 20 includes a quick charging inlet to which a quick charging connector of a quick charging facility is connected, and a normal charging inlet to which a normal charging connector connected to a household power source is connected. . In addition, the inlet (for example, the rapid charging inlet) 20 is configured to be connected to an external power feeding device 50 for supplying the electric power of the driving battery 16 to the electric device 100 outside the vehicle together with such a charging connector. In the present embodiment, the inlet 20 is configured so that a power supply connector 60 connected to the external power supply device 50 can be connected. That is, the inlet 20 also functions as a connection unit to which the external power feeding device 50 is connected.

  The inlet 20 to which the external power feeding device 50 is connected is connected to the driving battery 16 via a first connection circuit (connection wiring) 21. In the middle of the first connection circuit 21, a first contactor (opening / closing part) 22 for opening and closing the first connection circuit 21 is provided.

  Here, the external power supply apparatus 50 includes a power supply battery 51. The DC power supplied from the driving battery 16 of the vehicle 10 to the external power supply device 50 is converted into AC power of a predetermined voltage (100 V) by a DC / AC converter (not shown) and supplied to the power supply battery 51. . The external power supply device 50 includes an output terminal (outlet) 52 to which the electric device 100 is connected, and the power supply battery 51 is connected to the output terminal 52. That is, when electric power is supplied from the driving battery 16 of the vehicle 10 to the external power supply device 50, the electric power is supplied to the electric device 100 through the power supply battery 51 and the output terminal unit 52, and Also used for charging.

  Further, in the present embodiment, the power supply battery 51 is connected to the output terminal portion 52 via the second connection circuit (connection wiring) 53. A second contactor 54 that opens and closes the connection circuit 53 is provided.

  Further, the external power supply device 50 includes a display device 55 configured by, for example, a plurality of lamps. The display device 55 appropriately displays the connection state between the driving battery 16 and the electric device 100, that is, the open / close state of the first contactor 22. The display device may be provided on the vehicle body side.

  The vehicle 10 includes a control device 30 that comprehensively controls various devices included in the vehicle 10. The control device 30 grasps the operating state of the traveling motor 11 and the engine 12 based on signals from various sensors provided in the vehicle 10, and comprehensively controls various devices based on the grasped state. For example, in a state where the external power supply device 50 is connected to the inlet 20 via the power supply connector 60, the control device 30 also controls the operation of the external power supply device 50 that supplies power to the electrical device 100. In other words, the external power supply device 50 constitutes a part of the vehicle 10 when connected to the inlet 20 of the vehicle 10.

  The present invention is characterized in power supply control by the control device 30 that supplies power from the drive battery 16 to the electric device 100 via the external power supply device 50.

  Hereinafter, power supply control by the control device 30 of the hybrid vehicle 10 will be described in detail.

  As illustrated in FIG. 2, the control device 30 includes a charge amount detection unit 31, a charge control unit 32, an operation state detection unit 33, a power supply control unit 34, and a display control unit 35.

  The charge amount detection unit 31 detects the charge amount (charge state: SOC) of the drive battery 16. The charge amount of the driving battery 16 can be calculated from, for example, the detection values of the voltage sensor and the current sensor provided in the driving battery 16 and the detection values thereof. Of course, the method for detecting the amount of charge is not particularly limited. In the present embodiment, the charge amount detection unit 31 detects the charge amount of the power supply battery 51 included in the external power supply device 50 in the same manner as the charge amount of the drive battery 16.

  The charge control unit 32 controls the charge amount of the drive battery 16 by operating the engine 12 based on the detection result of the charge amount detection unit 31 and generating power with the generator 18. Specifically, when the charge amount of the drive battery 16 detected by the charge amount detection unit 31 is equal to or less than a preset first threshold value, that is, the remaining charge amount of the drive battery 16 Is reduced, the engine 12 is started and charging of the driving battery 16 is started. Thereafter, when the charge amount of the drive battery 16 is increased by the charge amount detection unit 31 to a second threshold value that is larger than the first threshold value, the charge control unit 32 is fully charged. When approaching, the engine 12 is stopped and the charging of the driving battery 16 is terminated.

  The operating state detection unit 33 detects (determines) the operating state of the engine 12, that is, whether or not the engine 12 is operating. Although the detection method of an operating state is not specifically limited, For example, it can determine based on the information from the crank angle sensor (not shown) etc. which are provided in the engine 12.

  The power supply control unit 34 controls the power supply to the electric device 100 outside the vehicle according to the detection result of the operation state detection unit 33. Specifically, the power supply control unit 34 controls the first contactor 22 that opens and closes the first connection circuit 21 that connects the driving battery 16 and the inlet 20, and the operation state detection unit 33 stops the engine 12. Is detected, the first contactor 22 is turned on (closed state). If the first contactor 22 is ON, power can be supplied from the driving battery 16 to the electric device 100 outside the vehicle via the external power supply device 50. On the other hand, when the operation of the engine 12 is detected by the operation state detection unit 33, the power supply control unit 34 turns off the first contactor 22 (open state). When the first contactor 22 is OFF, power supply from the drive battery 16 to the external power supply device 50 is stopped. That is, the power supply from the drive battery 16 to the electric equipment outside the vehicle is stopped.

  In the present embodiment, when the charge amount of the drive battery 16 becomes equal to or less than the first threshold value as described above, the engine 12 is operated and the drive battery 16 is charged until the charge value becomes equal to or greater than the second threshold value. The During this time, since the first contactor 22 is controlled to be turned off by the power supply control unit 34, the power supply from the drive battery 16 to the external power supply device 50 is stopped.

  In addition, the power supply control unit 34 supplies power from the power supply battery 51 to the electrical device 100 during a period in which the first contactor 22 is in the open state. Specifically, the power supply control unit 34 further controls the second contactor 54 that opens and closes the second connection circuit 53 that connects the power supply battery 51 and the output terminal unit 52 included in the external power supply device 50.

  In the present embodiment, the power of the driving battery 16 is connected to the electric device 100 via the power supply battery 51. For this reason, normally, the 2nd contactor 54 is maintained ON (closed state). Therefore, when the first contactor 22 is ON as described above, the electric power of the driving battery 16 is supplied to the electric device 100. On the other hand, when the first contactor 22 is OFF, the electric power of the driving battery 16 is not supplied to the electric device 100, but the electric power of the power supply battery 51 is supplied to the electric device 100. Therefore, the power supply to the electric device 100 is continued while the drive battery 16 is being charged.

  However, when the charge amount of the power supply battery 51 detected by the charge amount detection unit 31 is equal to or less than a preset third threshold value, that is, when the remaining charge amount of the power supply battery 51 is small, the power supply control unit 34 turns off the second contactor 54 even when the first contactor 22 is in an OFF state. In this case, the power supply to the electric device 100 is temporarily stopped.

  The display control unit 35 controls the display device 55 provided in the external power supply device 50 to display the connection state between the driving battery 16 and the electric device 100, that is, the ON / OFF state (open / close state) of the first contactor. In the present embodiment, when the first contactor 22 is ON (closed state), the display control unit 35 turns on the lamp that constitutes the display device 55, and the first contactor 22 is OFF (open state). In the case of, the lamp constituting the display device 55 is blinked.

  An example of power supply control by the control device 30 having such a configuration will be further described with reference to the flowchart of FIG.

  First, when the power feeding connector 60 is connected to the inlet 20 that is a connecting portion, as shown in FIG. 3, it is determined in step S1 whether or not the charge amount of the driving battery 16 is larger than the first threshold value. Here, when the charge amount of the drive battery 16 is larger than the first threshold (step S1: Yes), the process proceeds to step S2, and when the engine 12 is operating, the engine 12 is stopped. Thereafter, in step S3, the first contactor 22 and the second contactor 54 are turned on (closed state). As a result, the electric power of the drive battery 16 is supplied to the electric device 100 outside the vehicle via the power supply battery 51 of the external power supply device 50. In step S4, the lamps constituting the display device 55 are turned on. Thereby, the user of the vehicle 10 can easily recognize that the electric power of the driving battery 16 is supplied to the electric device 100.

  On the other hand, when the charge amount of the drive battery 16 is smaller than the first threshold value in step S1 (step S1: No), the process proceeds to step S5, and the charge amount of the power supply battery 51 is equal to or greater than the third threshold value. It is determined whether or not. If the charge amount of the power supply battery 51 is equal to or greater than the third threshold value (step 5: Yes), the first contactor 22 is turned off (open state) (step S6). At this time, the second contactor 54 is maintained ON (closed state). Therefore, power supply to the electric device 100 is maintained. That is, the electric power of the power supply battery 51 is supplied to the electric device 100.

  Next, in step S7, the engine 12 is operated, and power generation by the generator 18 is started. As a result, the driving battery 16 is charged. In step S8, the lamps constituting the display device 55 are blinked. Thereby, the user of the vehicle 10 can easily recognize that electric power is being supplied from the power supply battery 51 provided in the external power supply device 50 to the electric device 100. In other words, the user of the vehicle 10 can easily recognize that the drive battery 16 is charged in a state where the drive battery 16 and the electric device 100 are disconnected.

  If the charge amount of the power supply battery 51 is smaller than the third threshold value (step S5: No), the power supply battery 51 cannot supply power to the electric device 100. Therefore, the process proceeds to step S9 and the second contactor 54 is reached. Is turned off to temporarily stop the power supply from the power supply battery 51 to the electric device 100, and the lamps constituting the display device 55 are turned off in step S10.

  In step S7, charging of the driving battery 16 is started, and after the lamp of the display device 55 blinks in step S8, the process proceeds to step S11. Determine whether or not. If the charge amount of the driving battery 16 is equal to or greater than the second threshold value (step S11: Yes), the process proceeds to step S2, and after the engine 12 is stopped, the first contactor 22 and the second contactor 54 are turned on. (Closed state) (step S3), the power supply from the driving battery 16 to the electric device 100 is resumed. On the other hand, when the charge amount of the drive battery 16 is smaller than the second threshold (step S11: No), the process returns to step S5.

  By controlling power supply from the driving battery 16 to the electric device 100 outside the vehicle in this way, it is possible to appropriately supply electric power to the electric device 100 without falling short of electric power during use of the electric device 100 outside the vehicle. it can. Further, when the driving battery 16 is charged by operating the engine 12, the driving battery 16, the external power feeding device 50, and the electric device 100 are disconnected from each other. Fluctuations can also be suppressed, and various laws and regulations can be observed.

  Although one embodiment of the present invention has been described above, the present invention is not limited to this embodiment.

  For example, in the above-described embodiment, the configuration in which the external power supply apparatus includes the power supply battery is illustrated, but the external power supply apparatus does not necessarily include the power supply battery. Even in this case, when the driving battery is charged, fluctuations in the amount of electric power supplied to the electric device can be suppressed by blocking the driving battery and the electric device.

10 Hybrid vehicle (vehicle)
DESCRIPTION OF SYMBOLS 11 Driving motor 12 Engine 13 Drive transmission mechanism 14 Front wheel 15 Inverter 16 Drive battery 17 Output system 18 Generator 19 Clutch 20 Inlet 21 First connection circuit 22 First contactor 30 Control device 31 Charge amount detection unit 32 Charge control unit 33 Operating state detection unit 34 Power supply control unit 35 Display control unit 50 External power supply device 51 Battery for power supply 52 Output terminal unit (outlet)
53 Second Connection Circuit 54 Second Contactor 55 Display Device 60 Power Supply Connector 100 Electric Device

Claims (5)

A driving motor driven by electric power supplied from an engine driving the generator and a driving battery;
A connecting portion to which an external power feeding device for supplying electric power of the driving battery to an electric device outside the vehicle is connected;
A control device for controlling a hybrid vehicle, comprising: an open / close unit that opens and closes a connection circuit that connects the drive battery and the connection unit;
An operating state detector for detecting an operating state of the engine;
A power supply control unit that controls power supply to the electrical device according to a detection result of the operating state detection unit,
The power supply control unit stops the power supply from the driving battery to the electric device while the open / close unit is open during a period in which the operation of the engine is detected by the operation state detection unit. A control device for a hybrid vehicle. In the hybrid vehicle control device according to claim 1,
A charge amount detection unit for detecting a charge amount of the driving battery;
A charge control unit that controls a charge amount of the driving battery by operating the engine based on a detection result of the charge amount detection unit to generate power by the generator;
The charge control unit starts the engine and starts charging the drive battery when the charge amount of the drive battery detected by the charge amount detection unit falls below a first threshold value. A control device for a hybrid vehicle. In the hybrid vehicle control device according to claim 2,
When the charge amount of the drive battery detected by the charge amount detection unit increases to a second threshold value greater than the first threshold value, the charge control unit stops the engine and stops the drive battery. The hybrid vehicle control device is characterized in that charging of the vehicle is stopped. In the control apparatus of the hybrid vehicle as described in any one of Claim 1 to 3,
The external power supply device includes a power supply battery for supplying power to the electrical device,
The control apparatus for a hybrid vehicle, wherein the power supply control unit supplies power from the power supply battery to the electric device during a period in which the opening / closing unit is in an open state. In the control apparatus of the hybrid vehicle as described in any one of Claim 1 to 4,
A display control unit for controlling a display device included in the hybrid vehicle;
The control device for a hybrid vehicle, wherein the display control unit causes the display device to display an open / closed state of the open / close unit.

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